Nozzle structure for air distributing apparatus and the like



sept, 21, 1954 J. NOZZLE STR R. ANDREWS, JR UcTuRr: FoR

,689,515 AIR DISTRIBUTING IKE APPARATUS AND THE L Filed Dec. 7. 1951Patented Sept. 21, 1954 N OZZL STRUCTURE FOR AIR DISTRIBUT- IN Gr`APPARATUS AND THE LIKE John R. Andrews, Jr.,

to Bachmann Uxbri Uxbridge, Mass., setts Uxbridge, Mass., assigner dgeWorsted Corporation, a corporation of Massachu- Application December 7,1951, Serial No. 260,446

5 Claims.

This invention relates to apparatus for delivering an attempered streamof air to and through a web, such for example as a warp sheet and thelike. For convenience the apparatus will be referred to herein as adrier and in the embodiment of the invention shown in the drawings animportant part of the invention is embodied in the nozzle structure ofan air distributing header which is shown positioned within a drying boxof the general kind disclosed in United States Patent No. 2,541,383,issued February 13, 1951, and my co-pending applications Serial No.122,482, led October 20, 1949, now Patent No. 2,601,080 and Serial No.128,134, led November 18, 1949.

An object of this invention is to provide a simple, compactapparatus ofthe above mentioned kind.

Another object of the invention is to provide improved, nozzle structurefor delivering attempering air gently` and uniformly to and through aweb, such for example as a warp sheet and the like, without stretching,elongating, or otherwise distorting the threads, yarns, laments etc. ofwhich it is comprised.

Other objects of the invention will be in part obvious or in partpointed out hereinafter.

The invention accordingly consists in the features of construction,combinations of elements, arrangements of parts, and in the severalsteps and relation and order of each of `said steps to one or more ofthe others thereof, all as will. be pointed out in the followingdescription, and the scope of the application of which will be indicatedin the following claims.

The invention will best be understood if the following description isread in connection with the drawings, in which,

Figure 1 is a side elevation, partly in cross section, of an embodimentof the invention;

Figure 2 is a fragmentary View, also in side ele- `vation, of a portionof the composite nozzle structure of the header shown in Figure 1; and

Figure 3 is a vertical cross sectional view taken on the line 3-3 ofboth Figures 1 and 2.

In the embodiment of the invention disclosed herein a closure I isprovided into which a warp sheet W is introduced through port I2 in therear wall, and from which the warp sheet is discharged through the airinlet port I4 in the front wall. An air outlet I5 with a suction fan I5ais provided near the top of the rear wall of closure I0 through which isdischarged the increment of the air which has passed through the wettestportion of the warp sheet. Before enter- Cil `header will ll the headering into closure i0 the warp sheet passes through a sizing bath androlls, indicated generally by the numeral I6. l

Within closure Io is provided an elongated single header i8 the uppersurface of which comprises a series of composite nozzles, to be morefully described. Header i8 extends forwardly and upwardly from justbelow entrance port I2 toward the top of the front wall of closure i9.Two rollers 24 and 26 are provided in spaced relation longitudinally ofthe header near the front end of said header and a single roller 28 isprovided adjacent the rear end of said header above port i 2, and thewarp sheet W is led from the sizing bath IG through entrance port I2through a long reach and around roller 24, in a path parallel andadjacent to the upper surface of the header, and thenback to roller 28through a second reach substantially parallel to said first reach, andaround roller 28 and back to roller 2S through a third reachsubstantially parallel to said first and second reaches, and, afterpassing over roller 26 the Warp sheet is led down to roller 30 adjacentthe exit port of the chamber 9 and out through the said air inlet portI4.

In its first reach the warp sheet may be divided into a number of sheetsas for example by the splitter rollers 32, 34 and 36, as shown forexample in my co-pending applications Serial No.

122,482, led October 20, 1949,` and Serial No. 128,134, led November 18,1949,

Within closure I0, adjacent to and in horizontal alignment with closureport I4, are the heaters 38 through which the incoming air and anincrement of the used air is passedinto chamber 49 which communicateswith chamber 42 through the vanes or dampers 43 by which the volume ofair supplied to chamber 42 may be controlled. Chamber 42 houses airimpeller or fan means 44 and has the discharge port 46 communicatingwith said single header I8. The air from chamoer 42 is distributedwithin said header by means of baliies 48 and discharged from saidheader through said composite nozzlesv which are disposed along theupper surface of header I8, and extend laterally throughoutsubstantially the full Width of the header, as shown in Figure 3. Theports comprising the nozzles are made small enough to insure that theair supplied to the and issue in many equally spaced streams ofsubstantially equal volume.

The nozzle structure comprises two series of inwardly openingtrough-like members 52 and 54, disposed in spaced but parallel linescomprising a surface, the top surface as shown herein, of an airdistributing apparatus such as header I8. The trough-like members 52 ofthe iirst or inner series are spaced apart forming ports or channels 56between successive members. Each member 52 comprises the side walls 52aand 52c and the end wall 52b extending between the outer ends of saidside walls, leaving the memberv open inwardly. Thus each port or channel56 is denned by the side wall 52c of one member 52 and the side wall 52aof the member 52 nearest to said side Wall 52C.

The members 54 of said second series are similar to members 52 of therst series and they are spaced apart forming the ports or channels 58between successive members 54. Each member 54 comprises the side walls54a and 54c and end wall 54h extending between the outer ends of saidside walls. Each port or channel 58 is dened by the side wall 54c of onemember 54 and the side wall 54EL of the member 54 nearest to said sidewall 54, leaving the member open inwardly. The members 54, however, areoffset with respect to members 52 and respectively bridge the channels55, between successive members 52.

The members 52 are supported at their ends by the side rails or anges 65and 62 extending longitudinally along the inner surface of therespective side walls 29 and 22 of the header. The side rails or anges65 and 62 may be welded to the header side walls 20 and 22 respectivelyor supported at their ends so that they are readily removable and themembers 52 may be bolted to said flanges as by bolts b. The members 54are similarly supported on the side rails or flanges 54 and 66 extendinglongitudinally along the inner surface of the side walls respectively ofthe header, and outwardly of anges 65 and 62. The whole assemblycomprising supporting members 66-66 and the members 52 and 54 rest onthe angle members 68 and 'E0 projecting inwardly from the header sidewalls 20 and 22 respectively, and secured thereto by bolts b.

Air supplied into the header will be retarded and distributed by themembers 52. Air attempting to enter said members 52 will encounter anair cushion of relatively dead, unmoving air, and, after being sloweddown, will be diverted through said channels 56. The air streams issuingfrom channels 56 will similarly be slowed down by encountering cushionsof relatively dead or unmoving air within members 54, causing said airstreams to be slowed down and each stream deiiected, and divided intotwo streams owing around opposite ends of a member 54 and through thechannels 58 which are at the opposite ends of said member 54.

It will be seen that part of the air streams from two channels 56 willissue through a single channel 58. Thus as shown in Figure 2 anincrement of the air stream owing through one channel 55 will bedeflected toward an increment of air y iiowing through the adjacentchannel 56, and the air streams .r and y will be caused to flow towardone another, after being diverted by the members 54 bridging saidchannels 56 respectively, and will thus oppose one another and slow eachother further before owing outwardly together through the channel 58.

have found that an unexpectedly gentle and even flow of air may beobtained by this nozzle structure which also has the advantages ofsimplicity and ease of assembly.

It will thus be seen that there has been provided by this invention anapparatus in which the various objects hereinabove set forth togetherwith many thoroughly practical advantages are successfully achieved. Asvarious possible embodiments might be made of the mechanical features ofthe above invention and as the art herein described might be varied invarious parts, all without departing from the scope of the invention, itis to be understood that all matter hereinbefore set forth or shown inthe accompanying drawing is to be interpreted as illustrative and not ina limiting sense.

What I claim is:

l. The nozzle structure comprising a header having along one surface ofa series of troughlike members each opening inwardly and comprising twoparallel side walls and an outer wall, said members being spaced apartforming channels between the adjacent side walls of adjacent members,and a second series of inwardly opening trough-like members positionedoutwardly from said first series and spaced apart forming channelsbetween adjacent members, and oiiset with respect to said first seriescausing the members of said second series to bridge the portsrespectively of said rst series, whereby air flow within said header isretarded by members of said rst series and directed between the membersor the first series, and the low of the air through the ports of saidiirst series is retarded by the members of the second series anddeflected to pass through the channels of said second series.

2. A nozzle structure comprising a header having along one surface aseries of trough-like members each opening inwardly and comprising twoparallel side walls and an outer wall, said members being spaced apartforming ports between the adjacent side walls of adjacent members, and asecond series of inwardly opening trough-like members positionedoutwardly from said iirst series and spaced apart forming ports betweenadjacent members, and odset with respect to said iirst series causingthe members of said second series to bridge the ports respectively ofsaid first series, whereby air iiow within said header is retarded bythe members of said irst series and directed between the members cf thefirst series, and the iiow of the air through the ports of said iirstseries is retarded by the members of the second series and deflected topass through the ports of said second series, the members of said secondseries each acting to divide the stream of air from one port of said rstseries and divert it through two ports of said second series.

3. The nozzle structure comprising a header having along one surface aseries of trough-like members each opening inwardly and comprising twoparallel side walls and an outer wall, said members being spaced apartforming ports between the adjacent side walls of adjacent members, and asecond series of inwardly opening trough-like members positionedoutwardly from said first series and spaced apart forming ports betweenadjacent members, and oiset with respect to said rst series causing themembers of said second series to bridge the ports respectively of saidrst series, whereby air owwithin said header is retarded by the membersof said iirst series and directed between the members of the iirstseries, and the flow of the air through the ports of said first seriesis retarded by the members of the second series and deiiected to passthrough the ports of said second series, a `portion of the air iiowingthrough two successive ports of said iirst series being brought togetherfor passage through a single port of said second series, the incrementsof air from the said tw-o ports of said first series being deflectedtoward one another before passage through said port of said secondseries and thus each exerting an impeding and slowing action one on theother.

4. A nozzle comprising two trough-like members opening inwardly andspaced apart forming a port between them, and a third inwardly openingtrough-like member positioned outwardly from said rst two members andbridging the port between said i'lrst two members, whereby air from theport between sai-d two members is dvided by said third member and causedto ow in two streams around opposite sides of said third member.

5. An air distributing header having a discharge wall comprising aseries of nozzles, each nozzle comprising five trough-like membersdisposed with their open ends facing inwardly of the header three in oneline and two in a second line spaced from and substantially parallel tosaid rst line, said three members being spaced apart thus -dening twochannels, and. said two members being spaced apart forming between thema channel and being oiset with respect to said three members to bridgethe channels respectively defined by said three members.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 2,354,795 Castle Aug. 1, 1944 2,541,383 Rose Feb. 13, 19512,602,314 Cohn et al. July 8, 1952A FOREIGN PATENTS Number Country Date89,188 Sweden May 4, 1937

